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Finding the Third Proportional to 298,990 and 463,428

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Solution

The third proportional to 298,990 and 463,428 is: 718,303.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,990 : 463,428 = 463,428 : x
  2. Step 2: Convert to fraction form
    298,990/463,428 = 463,428/x
  3. Step 3: Cross multiply
    298,990x = 463,428 × 463,428
  4. Step 4: Simplify right side
    298,990x = 214,765,511,184
  5. Step 5: Solve for x
    x = 214,765,511,184/298,990
  6. Step 6: Final answer
    x = 718,303.33

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.